I have 2 thoughts.... when nerves wake up they do tingle.
That was my experience when I went on thyroid medication...
That lasted a YEAR... from numbness to tingling.

Also you can just do one at a time. B12, for 2 weeks, add in Benfotiamine, etc. at 2 week intervals.

The alpha lipoic in your mixture would be low dose and not absorbed well, and not likely to be working much.

As far as sleeping goes.... I have stretches at night when my feet feel normal. As we wake up the brain wakes up too, and the pain loop that registers pain for us is quite long/large and goes down to the brain stem and back up again into the brain.
It takes some time and activity for it all to work, I think.

Tingling is not a good diagnostic sign to hang your results on.
Tingling comes and goes, may be waking up or on the way to numbness....it is hard to pin down.

Now numbness I think is serious. And burning pain, I think is awful. I don't get the burning much anymore, but really I'd take tingling anyday.

The amount of B12 you absorb orally is very small. It is a stretch to think it would work this quickly, given all the places it needs to go including storage in the liver.

So just do the B12 for 2 weeks. When you then add in the Benfotiamine, do only 150mg daily for two more weeks.

See what happens.
I never get any signs from my vitamins. I do however get jittery/jived up on too much R-lipoic. That is a psychological thing, not a pain thing.

Last year I had freezing cold hands and feet and pain when they warmed up. This year nothing of the sort. And I guess that is because of the newer supplements I am using.
I switched to the stabilized R-lipoic, started 300mg of theanine for anxiety, and still use 150mg of Benfotiamine at bedtime.

Try not to focus on the pain signals.... I think focusing on them makes them seem worse. You can dissociate from them, using auto relaxation, or thinking about something completely different. Also when you get up you are fasting, and need to eat.
I bet things change radically after you have breakfast? That is when cortisol sweeps in to moderate physical stress.